Hydrochloric Acid → HCID 66987155, compound

Participants

Reaction Steps

1-(2-Methanesulfonylmethoxyethyl)-1-H-benzimidazole-5-carboxylic acid methyl ester (1.0 g, 3.2 mmoles) was dissolved in THF (5 mL). A solution of LiOH (0.38 g, 16 mmol) in water was added and the mixture stirred vigorously for 1 h. The reaction was acidified with 2N HCl to pH 2 at 5-10° C. It was then filtered to give 0.8 g (84%) of 1-(2-methanesulfonylmethoxyethyl)-1H-benzoimidazole-5-carboxylic acid. 1H NMR (300 MHz, DMSO-d6) δ 2.9 (s, 3H), 4.2 (t, 2H), 4.5 (t, 2H), 4.65 (s, 2H), 7.75 (d, 1H), 7.9 (dd, 1H), 8.25 (d, 1H), 8.35 (s, 1H), 12.7 (s, 1H)

Provenance & Evidence